1 files changed, 8 insertions, 0 deletions

diff --git a/arch/arm/mm/copypage-v6.c b/arch/arm/mm/copypage-v6.c
index 4127a7bddfe..841f355319b 100644
--- a/arch/arm/mm/copypage-v6.c
+++ b/arch/arm/mm/copypage-v6.c
@@ -41,6 +41,14 @@ static void v6_copy_user_highpage_nonaliasing(struct page *to,
         kfrom = kmap_atomic(from, KM_USER0);
         kto = kmap_atomic(to, KM_USER1);
         copy_page(kto, kfrom);
+#ifdef CONFIG_HIGHMEM
+        /*
+         * kmap_atomic() doesn't set the page virtual address, and
+         * kunmap_atomic() takes care of cache flushing already.
+         */
+        if (page_address(to) != NULL)
+#endif
+                __cpuc_flush_dcache_page(kto);
         kunmap_atomic(kto, KM_USER1);
         kunmap_atomic(kfrom, KM_USER0);
 }